CN204139988U - A kind of intelligent conversion joint - Google Patents
A kind of intelligent conversion joint Download PDFInfo
- Publication number
- CN204139988U CN204139988U CN201420508114.2U CN201420508114U CN204139988U CN 204139988 U CN204139988 U CN 204139988U CN 201420508114 U CN201420508114 U CN 201420508114U CN 204139988 U CN204139988 U CN 204139988U
- Authority
- CN
- China
- Prior art keywords
- oil recovery
- main body
- column type
- half main
- recovery passage
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Abstract
A kind of novel intelligent crossover sub, comprise left half main body, right half main body, column type sealed tongue, one way valve, test channel, service aisle, sealed tongue slideway, oil recovery passage and oil inlet pipe, column type sealing house is placed in sealed tongue slideway, test channel offers seal groove, the upper end of seal groove offers circumferential notch, lower end and column type seal to give up and form linear sealing, oil recovery passage comprises upper and lower two parts, one way valve is placed on oil recovery passage top and the bottom intersection, left half main body and right half main body have horizontal fluid course, horizontal fluid course is communicated with service aisle and oil recovery passage, oil recovery passage there is the through hole of two communication seals tongue slideways, oil inlet pipe and oil recovery channel connection.By controlling the pressure reduction on column type sealed tongue both sides, realizing oil recovery state and the intelligent conversion of well logging state, avoiding and depend on the conversion of spring practical function unduly, and the backflow phenomenon caused because spring failure makes the reset of column type sealed tongue not in place caused.
Description
Technical field
The utility model relates to a kind of crossover sub, particularly a kind of crossover sub.
Technical background
Along with fluid control technology, the advancing by leaps and bounds of Machine Design and level of processing, oil extraction instrument and oil recovery technique obtain large development, oil extraction efficiency also gets a promotion, but still the demand of market to crude oil high-efficiency mining cannot be met, as one of important step promoting electric pump producing well output efficiency, the mentality of designing of this conversion equipment of Pehanorm is all mainly rely on the elastic force of spring to drive the motion of sealing plate (seal modules) substantially, thus realizes the automatic switchover of test channel and oil recovery passage.Butterfly spring formula joint mainly by being arranged on the interaction between the resilience torsion of the butterfly spring in sealing plate rotating shaft and oil gas impact force, realizes the automatic switchover to downhole testing passage; Oil well electric pump separate-extraction joint utilizes the piston mechanism in oil recovery halfbody and elastic linkage mechanism to drive sealing plate mechanism, realizes oil recovery passage with well logging passage in the folding of oil recovery state with well logging state; Spring automatic-switching type joint mainly relies on fluid pressure to realize sealing slide block to the sealing of test channel, the pull-back forces realization sealing playback of slide block relying on extension spring and the unlatching of test channel, the automatic switchover that above three kinds of design schemes realize duty all too relies on the return torsion of spring, and the pressure that recovers the oil under the well recovery state of HTHP fluctuates often, sealing plate and sealing slide block is caused cannot well to realize good sealing, after working long hours, spring easily lost efficacy, and sealing plate and sealing slide block also cannot well playback.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of novel crossover sub, controlled the pressure reduction at two ends, column type sealed tongue left and right by the retardation of ball sealer to liquid stream, thus realize test channel, the switching of oil recovery passage under oil recovery state and well logging state.
The novel crossover sub of the one that the utility model provides, comprise left half main body, right half main body, column type sealed tongue, ball sealer and plug, described left half main body comprises test channel, service aisle and sealed tongue slideway, described right half main body comprises oil recovery passage and oil inlet pipe, described column type sealing house is placed in described sealed tongue slideway, described test channel offers seal groove, the upper end of described seal groove offers circumferential notch, lower end and described column type seal to give up to be formed and seal, described oil recovery passage comprises upper and lower two parts, upper part caliber is greater than lower part caliber, described ball sealer is placed on described oil recovery passage top and the bottom intersection, described left half main body and right half main body have horizontal fluid course, described horizontal fluid course is communicated with described test channel and described oil recovery passage, described oil recovery passage there is the through hole of two communication seals tongue slideways, described oil inlet pipe and described oil recovery channel connection, described plug is threaded with described oil recovery passage.
Further, also comprise extension spring, described extension spring one end is fixedly connected with column type sealed tongue inner bottom surface, and the other end is fixedly connected with right half main body, and the length of described extension spring is less than the degree of depth of column type sealing house inner chamber.
Further, also comprise stage clip, described stage clip is placed on below described plug and in cavity above described ball sealer, the length of described stage clip is greater than the height of described cavity.
Further, described left half main body and described right half main body are bolted.
Further, the right-hand member place of described horizontal fluid course place and described sealed tongue slideway adopts sealing ring to seal respectively.
Further, the material of described sealing ring is metal.
Further, the left end of described sealing house slideway is provided with packing.
Further, the lower end of described column type sealed tongue and described seal groove forms linear sealing.
Further, the caliber of described survey road passage is D
0, the length L ≈ D of described column type sealing house
0+ 12mm, diameter D
2≈ D
0+ 10mm.
The beneficial effect that the utility model brings: the pressure reduction by ball sealer, the retardation of liquid stream and flow losses being controlled to column type sealed tongue both sides, thus realize the conversion of oil recovery state and well logging state, time consuming nature, the triviality difficult problem that the conversion solved by manually realizing state brings, avoid and depend on the conversion of spring practical function unduly, thus avoid the backflow phenomenon caused because spring failure makes the reset of column type sealed tongue not in place in high temperature environments.
Accompanying drawing explanation
Fig. 1 novel crossover sub internal construction schematic diagram
Fig. 2 is that column type sealing house seals schematic diagram with seal groove
Fig. 3 is column type sealing house structure chart
Fig. 4 is novel crossover sub oil recovery view
Fig. 5 is novel crossover sub well logging view
Fig. 6 is left half main body schematic diagram
Fig. 7 is right half main body schematic diagram
In figure: 1. left half main body 2. column type sealed tongue 3. column type sealed tongue bottom surface 4. right half main body 13. packing 14. service aisle 15. of oil inlet pipe 5. plug 6. sealing ring 7. stage clip 8. ball sealer 9. sealing ring 10. screwed hole 11. extension spring 12. recovers the oil horizontal fluid course 19. seal groove 20. through hole 21. circumferential notch of passage 16. test channel 17. sealed tongue slideway 18..
Specific embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described, but protection domain of the present utility model is not limited to this.
As shown in Figures 1 to 4, a kind of novel crossover sub, comprise left half main body 1, right half main body 12, column type sealed tongue 2, extension spring 11, stage clip 7, ball sealer 8, plug 5, described left half main body 1 comprises test channel 16, service aisle 14 and sealed tongue slideway 17, described right half main body 12 comprises oil recovery passage 15 and oil inlet pipe 4, described column type sealing house 2 is placed in described sealed tongue slideway 17, described extension spring 11 one end is fixedly connected with column type sealed tongue inner bottom surface 3, the other end is fixedly connected with right half main body 12, the length of described extension spring 11 is less than the degree of depth of column type sealing house 2 inner chamber, original state, described extension spring 11 tension, described test channel 16 offers seal groove 19, the upper end of described seal groove 19 offers circumferential notch 21, lower end and described column type seal house 2 and are formed and seal, described oil recovery passage 15 comprises upper and lower two parts, upper part caliber is greater than lower part caliber, described ball sealer 8 is placed on described oil recovery passage 15 top and the bottom intersection, described plug 5 is threaded with described oil recovery passage 15, the degree of depth that can screw in for concrete regulating working conditions plug 5, thus regulate the opening pressure of corresponding operating mode lower seal ball 8, further increase device to the compliance of operation condition and flexibility, described stage clip 7 to be placed on below described plug 5 and in cavity above described ball sealer 8, the length of described stage clip 7 is greater than the height of described cavity, original state, described stage clip 7 pressurized, described left half main body 1 and right half main body 12 have horizontal fluid course 18, described horizontal fluid course 18 is communicated with described test channel 16 and described oil recovery passage 15, described oil recovery passage 15 there is the through hole 20 of two communication seals tongue slideways 17, described oil inlet pipe 4 is communicated with described oil recovery passage 15, the caliber of described service aisle 14 is D
0, the length L ≈ D of described column type sealing house 2
0+ 12, diameter D
2≈ D
0+ 10.
The technical problem that such scheme solves is: under oil recovery state, oil-immersed pump starts, crude oil in oil recovery passage 15 on flowing, when moving to ball sealer 8, be subject to the interim retardation of the initial opening pressure of ball sealer 8, this place's pressure is increased, now in oil recovery passage 15, pressure is delivered to column type sealed tongue 2 pressurized position based on Pascal's law, promotion column type sealed tongue 2 overcomes extension spring 11 active force and slides left, until withstand seal groove 19, linear sealing is formed with seal groove lower end, test channel 16 and service aisle 14 are kept apart, along with pressure increases further, the crude oil pressure acted on ball sealer 8 is greater than its initial opening pressure, ball sealer 8 is opened, crude oil flows to service aisle 14 by horizontal fluid course 18, simultaneously, crude oil flows in seal groove 19 through circumferential notch 21, because crude oil to flow to the fluid resistance loss of service aisle 14 via ball sealer 8 and horizontal fluid course 18, left at column type sealed tongue 2, right side forms pressure reduction, under differential pressure action, column type sealed tongue 2 tightly withstands on seal groove 19, column type sealed tongue 2 is made to realize positiver sealing.When stage clip 7 lost efficacy, device still can realize the function of duty conversion.Crude oil is pumped to oil recovery passage 15 via oil-in 4 by oil-immersed pump, the opening force at ball sealer 8 place is less than the maximum static friction force of sealed tongue 2 slip, now under pressure action, ball sealer 8 first backs down by crude oil, service aisle 14 is flowed into through horizontal fluid course 18, along with the further increase of pressure, crude oil acts on the pressure increase of column type sealed tongue (2) right side, simultaneously, because crude oil to flow to the fluid resistance loss of service aisle 14 via ball sealer 8 and horizontal fluid course 18, cause at column type sealed tongue 2 left, right side forms pressure reduction, under differential pressure action, column type sealed tongue (2) tightly withstands on seal groove 19, column type sealed tongue 2 is made to realize positiver sealing.
Under well logging state, oil-immersed pump is closed, crude oil stops flowing, crude oil in service aisle 14 forms backflow under gravity, crude oil flows to oil recovery passage 15 by service aisle 14 via horizontal fluid course 18, now, ball sealer 8 is at backflow crude oil pressure, under self gravitation and the effect of stage clip 7 pressure, quick closedown, in oil recovery passage 15, crude oil is formed under gravity and pours in down a chimney trend, column type sealed tongue 2 right-hand member place oil pressure dissipates, in service aisle 14 and the oil extraction pipeline that is attached thereto, crude oil is static, a higher static pressure is formed at seal groove 19 place, namely left at column type sealed tongue 2, right side forms pressure reduction, simultaneously under the guide effect of extension spring 11, column type sealed tongue 2 slides into the right-hand member of sealed tongue slideway 17 to the right, revert to initial position, test channel 16 is opened completely, formation is through with service aisle 14, service aisle 14 and the interior crude oil retained of the oil extraction pipeline be attached thereto flow into oil well downwards by test channel 16, carry out pressure release, after pressure release, tester just can enter into bottom oil well via service aisle 14 and test channel 16 and carry out well logging, thus realize conversion.
Further, described left half main body 1 and described right half main body 12 are bolted, and facilitate the processing of device and the installation of internal part, and structure simple, operate reliable and secure, solve linkage operation self-locking, the difficult problems such as complicated be installed.
Further, described horizontal fluid course 18 place adopts sealing ring 6 to seal, and the right-hand member place of described sealed tongue slideway 17 adopts sealing ring 9 to seal, and the material of described sealing ring 6 and described sealing ring 9 is metal, metal o-ring can improve resistance to corrosion while ensureing sealing.
Further, the left end of described sealing house slideway 17 is provided with packing 13, for the sealing between test channel 16 and sealing house slideway 17.
Further, described column type sealed tongue 2 forms linear sealing with the lower end of described seal groove 19, compared with linear sealing seals with face, reduces the processing request on surface, also improves the reliability of sealing.
Further, the caliber of described test channel 16 is D
0, the length L ≈ D of described column type sealing house 2
0+ 12mm, diameter D
2≈ D
0+ 10mm.
In the utility model, spring only helps out, and no matter whether stage clip lost efficacy, and based on the Bernoulli's equation between the flow section of sealed tongue slideway 17 two ends, sealed tongue all can realize the positiver sealing to test channel 16.Bernoulli equation is met when crude oil flows in this device:
(wherein subscript 0,1 refers to two flow sections in flow process respectively).When the two ends, left and right of sealed tongue be elected to be 0,1 section time, the flowing at sealed tongue two ends meets equation
Namely this device by ball sealer to the retardation of liquid stream and the flow losses h that causes thereof
w0-1control the direction of sealed tongue both sides pressure reduction, thus realize the conversion of oil recovery state and well logging state.
The opening pressure of note ball sealer is F
0, extension spring initial elongation amount is X
0, extension spring maximal tensility is for providing P to junction device when Δ X oil-immersed pump is opened
0opening pressure.
Under oil recovery state, when stage clip elastic force is larger, oil-immersed pump starts, and in-place oil upwards flows along oil recovery passage under oil-immersed pump effect, when moving to ball sealer position, owing to acting on the initial pressure P=P of ball sealer
0a
1< F
0, crude oil is subject to the interim retardation of ball sealer, makes this place's pressure P be delivered to sealed tongue pressurized position based on Pascal's law, promotes sealed tongue 2 and overcomes extension spring 11 directed force F
2=K
2x
0and the frictional resistance F between sealed tongue and sealing chute
3=P
0l π D
2slide left, until withstand until withstand seal groove 19, test channel 16 is sealed.Along with pressure increases further, act on the pressure P '=P of ball sealer
0' A
1>=F
0, crude oil overcomes ball sealer opening pressure and backs down ball sealer and then flow to service aisle 14.Meanwhile, because crude oil to flow to the fluid resistance loss of service aisle 14 via ball sealer, to cause in flow process at service aisle 14 and adopt passage 15 to form pressure reduction, sealed tongue 2 sealing performance is improved.When the active force of stage clip is very little or lost efficacy, device still can realize the switching of duty.Now, crude oil is pumped to oil recovery passage via oil-in 4 by oil-immersed pump, because stage clip elastic force is very little, and the opening force F at ball sealer place
0be less than the maximum static friction force F that sealed tongue 2 slides
close=K
2x
0+ P
0l π D
2, now under pressure action, oil stream is existing to be backed down ball sealer, flows into service aisle 14 through horizontal fluid course 18.Along with the further increase of pressure, crude oil acts on the pressure increase at sealed tongue 2 position.Simultaneously, because crude oil to flow to the fluid resistance loss of service aisle via ball sealer and horizontal fluid course, cause forming pressure reduction, under differential pressure action at the left and right end face of sealed tongue, sealed tongue tightly withstands on sealed tongue slideway 17 high order end wall, makes sealed tongue to realize positiver sealing.
When oil recovery state switches to test mode, oil-immersed pump is closed, and crude oil stops flowing, but the crude oil in service aisle 14 forms higher quiet oil pressure ρ under gravity
oilgH, what crude oil was formed in oil recovery passage 15 pour in down a chimney backflow trend makes ball sealer close.Now, there is pressure reduction in sealed tongue about 2 end face, and left end pressure is ρ
oilgHA
2, right-hand member pressure approximates 0, pressure direction to the right, simultaneously at the tensile force f of extension spring 11
2'=K
2under the booster action of Δ X, sealed tongue 2 overcome friction is slided to the right, until revert to initial position, test channel 16 is opened automatically, through with service aisle 14, the crude oil retained in service aisle 14 is flowed downward by test channel 16 and carries out pressure release, and after pressure release, tester is just lowered into bottom oil well by test channel 16 and carries out well logging, thus realizes conversion.
Described embodiment be the utility model preferred embodiment; but the utility model is not limited to above-mentioned embodiment; when not deviating from flesh and blood of the present utility model, any apparent improvement that those skilled in the art can make, replacement or modification all belong to protection domain of the present utility model.
Claims (9)
1. an intelligent conversion joint, it is characterized in that, comprise left half main body (1), right half main body (12), column type sealed tongue (2), ball sealer (8), plug (5), described left half main body (1) comprises test channel (16), service aisle (14) and sealed tongue slideway (17), described right half main body (12) comprises oil recovery passage (15) and oil inlet pipe (4), described column type sealing house (2) is placed in described sealed tongue slideway (17), described test channel (16) offers seal groove (19), the upper end of described seal groove (19) offers circumferential notch (21), lower end and described column type seal to be given up (2) and is formed and seal, described oil recovery passage (15) comprises upper and lower two parts, upper part caliber is greater than lower part caliber, described ball sealer (8) is placed on described oil recovery passage (15) top and the bottom intersection, described left half main body (1) and right half main body (12) have horizontal fluid course (18), described horizontal fluid course (18) is communicated with described service aisle (14) and described oil recovery passage (15), described oil recovery passage (15) there is the through hole (20) of two communication seals tongue slideways (17), described oil inlet pipe (4) is communicated with described oil recovery passage (15), described plug (5) is threaded with described oil recovery passage (15).
2. a kind of intelligent conversion joint according to claim 1, it is characterized in that, also comprise extension spring (11), described extension spring (11) one end is fixedly connected with column type sealed tongue inner bottom surface (3), the other end is fixedly connected with right half main body (12), and the length of described extension spring (11) is less than the degree of depth of column type sealing house (2) inner chamber.
3. a kind of intelligent conversion joint according to claim 1, it is characterized in that, also comprise stage clip (7), described stage clip (7) is placed in the cavity of described plug (5) below and described ball sealer (8) top, and the length of described stage clip (7) is greater than the height of described cavity.
4. a kind of intelligent conversion joint according to claim 1, is characterized in that, described left half main body (1) and described right half main body (12) are bolted.
5. a kind of intelligent conversion joint according to claim 1, is characterized in that, described horizontal fluid course (18) place adopts sealing ring (6) sealing, and the right-hand member place of described sealed tongue slideway (17) adopts sealing ring (9) sealing.
6. a kind of intelligent conversion joint according to claim 5, is characterized in that, the material of described sealing ring (6) and described sealing ring (9) is metal.
7. a kind of intelligent conversion joint according to claim 1, is characterized in that, the left end of described sealing house slideway (17) is provided with packing (13).
8. a kind of intelligent conversion joint according to claim 1, is characterized in that, described column type sealed tongue (2) forms linear sealing with the lower end of described seal groove (19).
9. a kind of intelligent conversion joint according to claim 1, is characterized in that, the caliber of described test channel (16) is D
0, the length L ≈ D of described column type sealing house (2)
0+ 12mm, diameter D
2≈ D
0+ 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508114.2U CN204139988U (en) | 2014-09-04 | 2014-09-04 | A kind of intelligent conversion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508114.2U CN204139988U (en) | 2014-09-04 | 2014-09-04 | A kind of intelligent conversion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204139988U true CN204139988U (en) | 2015-02-04 |
Family
ID=52416681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420508114.2U Expired - Fee Related CN204139988U (en) | 2014-09-04 | 2014-09-04 | A kind of intelligent conversion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204139988U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265188A (en) * | 2014-09-04 | 2015-01-07 | 江苏大学 | Intelligent crossover coupling |
-
2014
- 2014-09-04 CN CN201420508114.2U patent/CN204139988U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265188A (en) * | 2014-09-04 | 2015-01-07 | 江苏大学 | Intelligent crossover coupling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20160904 |